Water-feed for boilers



UNITED STATES: PATENT OFFICE.

ALFRED B. WILLOUGHBY, OF PHILADELPHIA, PENNSYLVANIA.

WATEIR-FEED FOR BOILERS.

SPECIFICATION forming part of llettersPatent No. 601,693, dated April 5, 1898.

' I Application neaMt 18,1897. Serial No. 637,035. (No model.)

To wllw'hom it may concern.-

Be it known that LALFRED B. WILLOUGHBY,

a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Water-Feeds for Boilers, of which the followingis a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

In the ordinary construction now generally in use for feeding water to boilers a large amount of sediment is carried with the water into the boilers, causing loss of steam and also afiecting the boiler-shell itself.

The object of my invention is a construction which will prevent the entrance of substantially all of the sediment or scale passing with the water into the boiler. I accomplish this in the following manner Instead of the inletwater-pipe, as in the ordinary construction, delivering atan open end into the water-space in the boiler I continue the water-inlet pipe beyond the point where the water is to be discharged into the boiler, preferably enlarging the size of the tube beyond this point and providing an outlet beyond the shell of the boiler for this extension of .the'water-feed pipe, which outlet is normally closed by means of a cook. The water is delivered from the water-feed pipe at the desired point into the water-space in the boiler by means of perforations or ori fices which are cut through the water-feed pipe above its horizontal center. The water passing with the scale or matter carried therein will pass through the water-inlet pipe, through the extension thereof until it reaches the closed cock, at which point it will back up, and the sediment being heavier than'the water will deposit at the bottom of the exten sion and the Water will be forced out through the orifices in the upper periphery of the pipe. Where the extension of the inlet water-pipe is of larger size than the inlet-pipe, I connect the inlet-pipe at or near the upper portion of the extension and con-necttheoutlet from said extension to the lowerportion of said pipe.

I will now describe theembodiment of my invention illustrated in the accompanying drawings, in which i Figure 1 is a section through the smokebox of a horizontal tubular boiler with my inon the line 2 2 of Fig. 1.

vention applied thereto. Fig. 2 is a section on the line 3 3 of .Fig. 1 with the tubes re-' moved. Fig. 4is an enlarged detailed section of a portion of the water-feed pipe and the extension thereof. Fig. 5'is an end view of the same. Fig. 6 is a section on the line 6 6, Fig. 4. Fig. 7 is a section on the line 7 7, Fig. 4. Fig.8 is a view similar to'Fig. 4 of a modified construction.

A is the smoke-box of the boiler, and B the horizontal tubes through which the products of combustion pass.

O is the water-level of the boiler, and D is the steam-outlet pipe.

1 The water-feed pipe consists of the sections a, b, and c, the sect-ion centering the boiler, traversing the length of the boiler, the section 19 passing around the end and the section 0 back again toward the front of the boiler. In the'upper periphery of the section 0, which is slightly below the water-level of the boiler, are placed the orifices c, which preferably are at or near the highest point of the pipe and are inclined slightly, so as to strike the water in the boiler at a slight inclination fromthe Fig. 3 is a sectionv vertical in order not to disturb the level wator-surface. The'section c is connected by union with the section b, and the section b by means of the union with the section a. Beyond the section 0 is the enlarged extension d, the pipe 0 beingconnected with the section 61 at or near the highest point of the section (1. Beyondthe section 01 is the outlet-section e, which connects with the section (1 at or near the lowest point of the section d. This section e passes out through the boiler-shell and has the cock f attached thereto. If desired, in place of using the section d the section 0 may be prolonged of the same size and the section 6 connected directly to the prolonged section 0, as shown in Fig. 8. The operation is as follows: The Water entering the section 0. passes through the section b and the section 0 and initially passes through the sections (1 and e until it reaches the cock. When the water is backed up, sufficient back pressure is obtained to force the water at the end of the pipe 0 out through the orifices c, the water passing through the pipe 0 into the pipe d. The solid matter will drop out of it and settle in the bottom of the pipe 01, and as the level of cept that with this construction very frequent cleaning would be required.

I do not intend to limit myself to the use of this water-feed construction in any particular type of boiler, it being merely shown with a return-flue boiler,that being one type of boiler to which it is adapted. Nor do I intend to limit myself to the precise location in the pipe 0, in which the orifices c o are placed, or their direction, as they may be placed at any point above the horizontal center of the pipe and may have any desired inclination.

I'do not intend to limit myself to any particular extent of water-feed pipe or the number of turns it makes in the boiler, as the pipe may be longer or shorter or have more or less turns than shown without departing from my invention.

By coupling the sections together as above described any section may be removed and replaced or the whole taken apart at any time with great facility, which may be necessary if the sedimentary deposit be very great.

Having now fully described my invention,

what, I claim, and desire to protect by Letters Patent, is-

1. In a boiler, a water-feed pipe having orifices in said pipe within the boiler at the desired point for delivery of the water, a pipe secured to and extending beyond said pipe, the water-feed pipe opening into said lastmentioned pipe at or near its upper end, said last-mentioned pipe extending below the adjacent section of the water-feed pipe, and a normally-closed discharge-pipe opening from said extension-pipe at or near its lower end.

2. In a boiler, a water-feed pipehaving orifices in said pipe above the horizontal center of the pipe within the boiler at the desired point for delivery of the water, a pipe secured to and extending beyond said pipe, the water-feed pipe opening into said last-mentioned pipe at or near its upper end, said lastmentioned pipe extending below the adjacent section of the water-feed pipe, and a normally-closed discharge-pipe opening from said extension-pipe at or near its lower end.

3. In a boiler, awater-feed pipe having orifices in said pipe Within the boiler at the desired point for delivery of the Water, a pipe secured to and extending beyond said pipe, the water-feed pipe opening into said last nentioned pipe at .or near its upper end, said last-mentioned pipe extending below the adjacent section of the water-feed pipe, and a normally-closed discharge-pipe extending from said extension-pipe at or near its lower end, and a valve upon the discharge-pipe adapted when operated to open said pipe.

4. In a boiler, a water-feed pipe having orifices in said pipe above the horizontal center of the pipe within the boiler at the desired point for delivery of the water, a pipe secured to-and extending beyond said pipe, the Waterfeed pipe opening into said last-mentioned pipe at or near. its upper end, said last-men tioned pipe extending below the adjacent section of the water-feed pipe, and a normallyclosed discharge-pipe opening from said extension-pipe at or near its lower end, and a valve upon the discharge-pipe adapted when operated to open said pipe.

5.. In a boiler, awater-feed pipe having ori-,

fices in said pipe within the boiler at the desired point for delivery of the water, an extension-pipe of larger diameter than the water-feed pipe and extending below the adjacent section of the water-feed pipe into which said feed-pipe opens, the discharge from said extension-pipe being normally closed.

6. In aboiler, awater-feed pipe having orifices in said pipe above the horizontal center of the pipe within the boiler at the desired point for delivery of the water, an extensionpipe of larger diameter than the water-feed pipe into which said feed-pipe opens, said extension-pipe extending below the adjacent section of the water-feed pipe, the discharge from said extension pipe being normally closed.

7. In a boiler, a water-feed pipe having orifices in said pipe within the boiler at the desired point for delivery of the water, an-extension-pipe of larger diameter than the water-feed pipe intowhich said feed-pipe opens, the said extension-pipe extending below the adjacent section of said water-feed pipe, the

discharge from said extension-pipe being nor mally closed, a valve controlling the discharge from said extension-pipe and adapted when operated to open said pipe..

8. In aboiler, a Water-feed pipe having orifices in said pipe above the horizontal center of the pipe within the boiler at the desired point for delivery of the water, an extensionpipe of larger diameter than the water-feed pipe into which said feed-pipe opens, said extension-pipe extending below the adjacent section of said water-feed pipe, the discharge from said extension pipe being normally closed, a valve controlling the discharge from said extension-pipe and adapted when operated to open'said pipe.

9. In a boiler, a Water-feed pipe having orifices in said pipe within the boiler at the desired point for delivery of the water, an extension-pipe of larger diameter than the water-feed pipe into which said feed-pipe opens I at or near its upper end, said extension-pipe extending below the adjacent section of the water-feed pipe, the discharge from said ex- I tension-pipe being normally closed.

10. In a boiler, a water-feed pipehaving orifices in said pipe above the horizontal center ter-feed pipe into which said feed-pipe opens at or near its upper end, said extension-pipe extending below the adjacent section of said I 5 water-feed pipe, the discharge-pipe normally closed connecting with said extension-pipe at or near its lower end.

In testimony of which invention I have hereunto set my hand.

ALFRED B. WILLOUGHBY. Witnesses:

FRANK S. BUssER, M. F. ELLIS. 

